Saint-Denec alignement de menhirs

There is also a rather large menhir like stone laying at the foot of one of the menhirs, and there are other large stones laying in the fields nearby. I wonder if there was once a lot more here in the way of alignements?

On closer inspection of the fallen stone it can be seen that it has carvings on it. Two axes and a couple of the bishops crook shaped symbols (crosses). Not clearly seen in picture.